Air valve for inner tubes



S. HOLICK AIR VALVE FOR INNER TUBES Filed July 14 1921 Patented May 22.1%23.

arses STEVEN HULICK, 0F MEL'LSIBORU, PEhlNSYLVANIA.

era verve ran runner runes.

Application filed July it,

To all whom it may concern:

Be it known that l, S'rnvnn Honroin, a citizen of the United States, residing at Millsboro, in the county of Washington and State of Pennsylvania, have invented certain new and useful Improvements in an an Valve for Inner Tubes; and l do hereby declare the following. to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to valves of the type designed particularly for the inner tubes of pneumatic tires and which embody a tubular stem and valve mechanism therein, automatic in action when inflating the tube and adapted to be operated at will for-relieving internal pressure when required for any purmse.

The present invention provides a valve of the general nature hereinbefore indicated embodying a few number of parts, simple in structure and not liable to leak or otherwise get out of repair.

Other objects and advantages will be apparent and suggest themselves as the nature be the invention is understood.

While the drawing illustrates an embodiment of the invention it is to be understood that in adapting the same to. meet different conditions and requirements, various changes in the form, proportion and minor details of construction may be resorted to without departing from the nature of the invention.

Referring to the accompanying drawingforming a part of the specification,

Figure 1 is a vertical central longitudinal section of a valve of the nature herein indicated embodying the invention.

Figure 2 is a detail. view of the plunger and cooperating guide therefor.

Figure 3 is a detail view of the inner end of the valve.

Corresponding and like parts are referred to in the following description and designated in the several views of the drawinc by like reference characters.

lhe valve comprises the tubular stem 1. which is formed with a central opening having its outer portion enlarged to form an inner shoulder 2. A head 3 is provided at the inner end of the stem 1 to form an element for clamping the inner tube or other like part in a manner well understood. A valve 4 is located at the inner end of the rear. Serial No. 484,653.

stem 1 and preferably consists of a fiat piece of rubber or like flexible and resilient ma- .terial suitable for the purpose. The valve retained in place by means of the fastening 5. The plate 6 has a central opening through which the point or extremity of a finger 7' passes and which finger is likewise retagned in position by means of the tasten= in he plunger 8 extends through the opening of the tubular stem 1 and its inner end engages the valve 4 and its outer end projects slightly beyond the stem 1 to be pressed upon when it is required to unseat the valve t to relieve the internal pressure of the tube or other like part. A. stop 9 is provided on the plunger 8 near the outer end thereof and operates to limit the outward movement of the plunger and to form an abutment for a spring 10 which is mounted on the plunger and has its inner end in engagement with the shoulder 2. A guide 11 is threaded in the outer enlarged portion of, the opening formed in the stem 1 and its inner end cooperates with the stop 9 to limit the outward movement of the plunger and is adapted to cooperate with the stop 9 to prevent loss of compression and thereby cooperate in conjunction with the valve 4 or independently thereof.

lit will beunderstood that the part 9 also performs the function of a valve and the inner end of the guide 11 constitutes a seat for the part 9 to close against. When air is passing through the stem 1 the part 9 is clear of the inner end of the guide 11 and the valve 4 is free of the head 3 so as not to obstruct the passa e of the air. When the valve 4 is seated oss of pressure through the stem 1 is prevented. This may be supplemented by the action of the part 9 closmg against the inner end of the part 11. When it is re uired to relieve the inner pressure of the tu e or other part the plunger is pressed inward thereby unseating the parts 9 and 4 whereby the confined air may readily escape through the stem 1.

lit is observed that the opening in the plate 6 is in line with the opening of .the stem 1 and that the tree end-of the spring 7 operates through the opening of the plate 6 and exerts a pressure on the valve 4 opposite and in line with the opening of the stem 1, thereby causing the portion of the valve opposite the inner enolof the stem to engage the same in a positive manner, whereby to prevent any loss of pressure. The plate 6 is resilient and reiniorces the valve t and serves to press the same upon its seat with a certain degree of pressure The element 7 supplements the action of the part 6 and applies the pressure more directly to the valve 4;- in line with the opening of the stem 1, whereby to insure a ositive anti firm seating of the valve 4. l hen pressure is applied to the outer end of the plunger 8, it acts directly upon the free end of the spring '2, the ten sion of which is overcome, whereby the valve e may respond and open, thereby relieving the pressure to permit of quick deflation ofthe inner'tuhe which is desirable at times, particularly to admit of compact folding of the tube for carrying or storing.

Having thus clescribedi the invention, what I claim is 1. An eir valve of the character specified; comprising a tubular stem. e flap valve at the inner end of the tubular stem and. a plunger passing. through the tubular stem anti adapted when pressed upon to unseat the valve at the inner end; of the tubuiar stern, whereby to relieve internal pressure.

2, An air valve of the character specifiecl comprising a tubular stem, a flap valve at the inner end of the tubuiar stem, a plate disposed exterior to the valve ancl having aand a stop carried by the plunger and adapteri to seat against the inner enol of said guide. in testimony whereof I afiix my signature in presence of two witnesses.

hi srnvnu HOLIUK.

mark Witnesses;

J. A. (JUsHMAIv Tnos. F. EVANS. 

